【英文标准名称】:Concreteroofingtilesandfittingsforroofcoveringandwallcladding.Productspecifications
【原文标准名称】:屋顶覆盖物和墙面饰层用混凝土屋面瓦及配件.产品规范
【标准号】:BSEN490-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2012-01-31
【实施或试行日期】:2012-01-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:IEC/TC55
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:CEmarking;Certificatesofconformity;Certification;Certification(approval);Checks;Coatings;Concreteblocks;Concretes;Conformity;Construction;Constructionmaterials;Constructionalproducts;Definitions;Designations;Durability;Evaluations;Exteriorwallcoverings;Fireconditions;Fixings;Foreignsurveillance;Frost-thawresistance;Inspection;Interiorwallcoverings;Loadcapacity;Marking;Mouldedbricks;Objection;Organic;Precastconcreteparts;Productspecification;Productioncontrol;Properties;Qualificationtests;Qualityassurance;Qualitycontrol;Resistance;Roofcovering;Roofcoverings;Roofingtiles;Roofs;Samplingmethods;Specification(approval);Stone;Surfacespreadofflame;Surfaces;Symbols;Taking-out;Terms;Verification;Wallcoverings
【摘要】:
【中国标准分类号】:Q14
【国际标准分类号】:91_100_30
【页数】:32P;A4
【正文语种】:英语
基本信息
| 标准名称： | 垃圾车 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1900-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
适用范围
没有内容
前言
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目录
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引用标准
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所属分类： 车辆 汽车 汽车综合
【英文标准名称】:StandardPracticeforStrain-ControlledAxial-TorsionalFatigueTestingwithThin-WalledTubularSpecimens
【原文标准名称】:用薄壁管状样本进行张力控制轴向扭力疲劳试验惯例
【标准号】:ASTME2207-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E08.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:axialstrain;axialstress;axial-torsionalfatigue;in-phaseaxial-torsionalfatiguetest;out-of-phaseaxial-torsionalfatiguetest;shearstrain;shearstress;strain-controlledtesting;thin-walledtubulartestspecimen;Axialfatiguetests;A
【摘要】:Multiaxialforcesoftentendtointroducedeformationanddamagemechanismsthatareuniqueandquitedifferentfromthoseinducedunderasimpleuniaxialloadingcondition.Sincemostengineeringcomponentsaresubjectedtocyclicmultiaxialforcesitisnecessarytocharacterizethedeformationandfatiguebehaviorsofmaterialsinthismode.Suchacharacterizationenablesreliablepredictionofthefatiguelivesofmanyengineeringcomponents.Axial-torsionalloadingisoneofseveralpossibletypesofmultiaxialforcesystemsandisessentiallyabiaxialtypeofloading.Thin-walledtubularspecimenssubjectedtoaxial-torsionalloadingcanbeusedtoexplorebehaviorofmaterialsintwoofthefourquadrantsinprincipalstressorstrainspaces.Axial-torsionalloadingismoreconvenientthanin-planebiaxialloadingbecausethestressstateinthethin-walledtubularspecimensisconstantovertheentiretestsectionandiswell-known.Thispracticeisusefulforgeneratingfatiguelifeandcyclicdeformationdataonhomogeneousmaterialsunderaxial,torsional,andcombinedin-andout-of-phaseaxial-torsionalloadingconditions.1.1Thestandarddealswithstrain-controlled,axial,torsional,andcombinedin-andout-of-phaseaxialtorsionalfatiguetestingwiththin-walled,circularcross-section,tubularspecimensatisothermal,ambientandelevatedtemperatures.Thisstandardislimitedtosymmetric,completely-reversedstrains(zeromeanstrains)andaxialandtorsionalwaveformswiththesamefrequencyincombinedaxial-torsionalfatiguetesting.Thisstandardisalsolimitedtocharacterizationofhomogeneousmaterialswiththin-walledtubularspecimensanddoesnotcovertestingofeitherlarge-scalecomponentsorstructuralelements.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H23
【国际标准分类号】:19_060
【页数】:8P.;A4
【正文语种】:英语